UM0289

PC software

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Figure 8.

6235 window

The Connector Selection panel shows the connector of the MDK-ST10 with which the

EVAL6235 can be connected (some connector selections could be disabled if the connector

is used by other windows). The left part of this window allows the user to control a BLDC

motor in open loop mode. The right part of the window allows the user to perform a PID

speed closed loop control with encoder feedback.

The Motor Control Command panel is always enabled, while the Control Parameters and

Control Loop Time panels are disabled when the Closed Loop check button is not checked.

In each case the Get button is always enabled.

Motor Control Command panel:

●

Enable: Enables the 6235 driver. This command switches ON all Power MOSFETs of

the driver (pin EN high).

●

Disable: Disables the 6235 driver. This command switches OFF all Power MOSFETs of

the driver (pin EN low).

●

Unbrake: Sets the pin BRAKE high of the 6235 and enables the normal mode (six step

control strategy).

●

Brake: Sets the pin BRAKE low of the 6235. This command switches ON all High Side

Power MOSFETs, implementing the Brake Function.

●

Duty Cycle Set: This slider allows the user to set the duty cycle of the PWM generated

by the ST10 as input for the FWD/REV pin of the 6235 driver. Values between 0 and

50% cause the rotation of the motor in one direction, while values between 50% and

100% cause the rotation of the motor in the other direction. A 50% value corresponds

to no motor rotation.

Note:

The real direction (clockwise or counterclockwise) depends on the connection between the

6235 and the motor.

●

PWM set: This slider allows the user to change the frequency of the PWM generated by

the ST10. The allowed values go from a minimum of 17 kHz to a maximum of 30 kHz.

(with 1 kHz steps)

Note:

At system startup the default values are: disable, brake, PWM duty cycle 50%, PWM

frequency 17 kHz.